[gnome-applets] ci: build with --disable-Werror

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 18d5765a6cbb78a131a93c276f5e5f9f8b5bafc5
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Tue May 7 21:25:09 2019 +0300

    ci: build with --disable-Werror

 .gitlab-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index e73d57df1..5dcc77de0 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -37,6 +37,6 @@ build-ubuntu:
                       xsltproc
                       yelp-tools
   script:
-    - ./autogen.sh
+    - ./autogen.sh --disable-Werror
     - make
     - make distcheck